A technician receives a mild shock when touching a faulty machine but does not lose consciousness. What is the most likely effect of the electric current in this scenario?
Involuntary muscle contraction and a sharp tingling sensation
The physiological effect of an electric shock depends chiefly on the magnitude of current that passes through the body, following the perception-to-fatal scale used in electrical safety.
The scenario describes a mild shock where the technician stays fully conscious, which tells us the current was small, only a few milliamperes at the level of perception and let-go.
At such low currents the effect is stimulation of sensory nerves and muscles, felt as a sharp tingling sensation together with involuntary muscle contraction as the muscles twitch.
Immediate cardiac arrest requires currents large enough to disrupt the heart's rhythm (ventricular fibrillation), which would not leave the person conscious, so that option is far too severe.
Respiratory paralysis with a prolonged coma likewise needs a much heavier current sustained across the chest, again inconsistent with a mild, survivable shock.
Widespread internal tissue destruction and severe skin burns are heat effects of very high fault currents, typical of high-voltage contact, not of a mild tingle.
Hence, the answer is Involuntary muscle contraction and a sharp tingling sensation.
Similar Questions
Why is hazard communication critical in construction environments?
What role do designated storage areas play in factory safety and cleanliness?
Why is it necessary to monitor isolation resistance in fuel cell electric vehicles?
What should a Process Hazard Analysis methodology be based on?
Which safety measure should be followed when replacing a CFL or LED lamp connected to a DC power supply?
According to Indian Electricity (IE) safety practices, what is the first mandatory action before performing maintenance on a commercial electrical wiring installation?
What is a critical step before distributing PPE to workers in a new manufacturing plant?
In an electric vehicle, which approach ensures both physical and visual safety when accessing high voltage components during maintenance?
Important Questions from Occupational Safety and Health
In case of arc welding, one should protect his eyes using
The only thing that can keep you safe consistently is
Hoists and lifts used for carrying persons shall be fitted with
Which of the following aspects is not a part of safe work place?
Which of the following cannot be used as a safety device?
